The total delinquency case rate increased 46% between 1985 and 1996 and then declined 47% through 2013.

Following a steady decline since 2008 (down 33%), the delinquency case rate in 2013 reached a new historic low. The rate in 2013 (33.8 cases per 1,000 youth under juvenile court jurisdiction) was 23% below the 1985 rate (44.1).